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Abstract #3696

Tailored 3D Inner Volume Suppression Pulses for MR Corticography

Jun Ma1, Xinqiang Yan2, Bernhard Gruber3, Jonathan Martin1, Zhipeng Cao2, Jason Stockmann3, Kawin Setsompop3, and William Grissom1
1Biomedical Engineering, Vanderbilt University, Nashville, TN, United States, 2Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, United States, 3Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States

To fully utilize the potential of a new cortical imaging-optimized 7T scanner with Gmax= 200 mT/m & Smax=700 T/m/s gradients, 128 Rx channels, 16 Tx channels, and an AC/DC B0 shim array, we describe a tailored parallel transmit inner-volume-suppression (IVS) pulse design, which can enable highly accelerated functional and diffusion imaging by reducing g-factor and suppressing physiological noise from ventricle CSF. 3D IVS pulses were designed using simulated B1+ maps for the scanner’s 24-element coil. Simulation results demonstrated uniform inner volume suppression for 3D and 2D imaging. A 2D in-vivo IVS pulse design experiment demonstrated IVS’s ability to reduce g-factor.

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